= Preview Options
The topic of this document is to detail the additional features that can be found in the viewport of the Customizable Object Editor.
== Display UV's
The UV's Button is located in the toolbar of the Preview Instance Viewport. This button toggles the display of a given static mesh's UV's.
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It's possible to change the static mesh's UV's beeing shown by clicking on the dropdown button and selecting another option. If the Customizable Object has multiple LODs, option names will specify the LOD they belong to.
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== Bake Instance
The Bake Instance Button converts the preview instance to Unreal Engine Assets, creating SkeletalMeshes, Materials and Textures. For more information on how to Bake Instances and why it can be usefull check the [[ /w/mutable/unreal-engine-4/user-documentation/baking-instances | Baking Instances ]] page.
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== State Test
Make a State-Change performance test, iterating through all possible states and runtime parameters for this instance. The result of the test can be displayed in the viewport by enabling the toggle button in the State Test dropdown. Showing information about the instance's geometry is also a toggleable option from this feature.
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== High Resolution Screenshot
Available from the Preview Options menu, it will show a pop up menu to configure the settings used to create the Screenshot.
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= Advanced Preview Settings
== Play Animations
Selecting an Animation Asset from the animation dropdown, under the Custom Settings section in the Preview Scene Settings tab, will assign the animation to the preview instance. This animation can then be played from the Preview Scene Settings panel.
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== Adjust Lighting
It is possible to add a new In-Game Light Settings Profile from an existing Unreal Engine Level Asset. By clicking on the Add New Profile Button, in the lower part of the Preview Scene Settings, an Asset Browser will show up. After selecting a level a new window will appear and ask which lights will be used to make the profile. The new profile is added to the Scene Profiles and can be selected from the profiles dropdown.
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(WARNING) Warning: The selected Level must have at last one DirectionalLight, one SkyLight and one PostProcessVolume actors. The information in those actors will be used to make the new profile.
== Add Multiple Lights
Additionally, multiple lights can be added to the viewport using the lighting options in the Custom Settings section. This feature allows users to create, edit, save and load sets of lights to further improve the lighting from the preview scene.
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